PHOTOGRAPHIC INVESTIGATIONS
OF FAINT NEBULAE
THE UNIVERSITY OF CHICAGO PRESS
CHICAGO, ILLINOIS
THE BAKER & TAYLOR COMPANY
NEW YORK
THE CAMBRIDGE UNIVERSITY PRESS
LONDON
THE MARUZEN-KABUSHIKI-KAISHA
TOKYO, OSAKA, KYOTO,
FUKUOKA, BOMBAY
THE MISSION BOOK COMPANY
SHANGHAI
The University of Chicago
Publications of the Yerkes
Observatory
VOLUME IV PART II